A worker is in serious condition after an explosion and fire at a Perpetual Energy gas well site southeast of Edson. Two workers were in a building on the site when the explosion happened but it’s unclear what kind of work they were doing at the time. This explosion is the second at a sweet gas well site near Edson in less than a month. A flash fire at a Husky site in early March injured 12 workers, three of them seriously. The investigation into that incident is still ongoing.